Method of making granular detergent compositions comprising surfactants
a technology of surfactants and detergent compositions, which is applied in the direction of detergent compositions, organic detergent compounding agents, chemistry apparatus and processes, etc., can solve the problems of undesirable consumer formation of large granules, large granules, and large granules
Active Publication Date: 2016-12-27
PROCTER & GAMBLE CO
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Benefits of technology
The present invention is a process of making a granular detergent composition by spray-drying an aqueous detergent slurry to form spray-dried detergent particles. An emulsion is then formed by adding a surfactant to the spray-dried particles. The technical effect is the production of a granular detergent composition with improved properties, such as better solubility and faster dissolution in water.
Problems solved by technology
However, this post addition spray-on can result in the formation of large granules, due to uneven distribution of the surfactant, i.e. the surfactant tends to form large droplets that stick to the detergent granules and result in the formation of large granules.
The formation of these large granules is undesirable to consumers, who prefer smaller granules.
Consumers associate large granules with slow dissolution and poor cleaning performance.
Method used
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[0114]A comparison was made between a granular laundry detergent composition according to the present invention and a granular laundry detergent composition outside of the scope of the present claims.
[0115]An aqueous alkaline slurry composed of sodium sulphate, sodium carbonate, water, acrylate / maleate co-polymer and miscellaneous ingredients was prepared at 80° C. in a crutcher making vessel. The aqueous slurry was essentially free from zeolite builder and essentially free from phosphate builder. Alkyl benzene sulphonic acid (HLAS) and sodium hydroxide were added to the aqueous slurry and the slurry was pumped through a standard spray system pressure nozzle and atomized into a counter current spray drying tower at an air inlet temperature of 275° C. The atomized slurry was dried to produce a solid mixture, which was then cooled and sieved to remove oversize material (>1.8 mm) to form a spray-dried powder. The spray-dried powder had a bulk density of 470 g / l.
The composition of the s...
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Abstract
A process of making a granular detergent composition comprising the steps of:a) forming an aqueous detergent slurry;b) spray drying the aqueous detergent slurry to form a plurality of spray-dried detergent particles;c) forming an emulsion comprising a surfactant; andd) adding the emulsion from step c) to at least a portion of the plurality of spray-dried detergent particles.
Description
FIELD OF THE INVENTION[0001]The present invention is directed to methods of making granular detergent compositions containing surfactants.BACKGROUND OF THE INVENTION[0002]Surfactants are often added to laundry detergent compositions. Often these provide a cleaning benefit to fabrics washed with the laundry detergent composition.[0003]In the case of granular laundry detergent compositions, surfactants can be incorporated into the granules during spray-drying, or agglomeration for example, or they can be post-added to the granules. If they are post-added, they are often sprayed onto the detergent granules. However, this post addition spray-on can result in the formation of large granules, due to uneven distribution of the surfactant, i.e. the surfactant tends to form large droplets that stick to the detergent granules and result in the formation of large granules.[0004]The formation of these large granules is undesirable to consumers, who prefer smaller granules. Consumers associate l...
Claims
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IPC IPC(8): C11D11/02C11D3/37C11D17/00C11D17/06C11D3/42
CPCC11D17/0017C11D3/3788C11D11/02
Inventor TANTAWY, HOSSAM HASSANGAULT, SABRINA BEATRICE DANIELLEPATTON, ANDREW BRIAN GREENAWAYPORTER, ADAMWALKER, STEPHEN JOHNAHMADIAN, HOSSEIN
Owner PROCTER & GAMBLE CO